Multiple choice

In what time will a railway train 60 m long moving at the rate of 36 kmph pass a telegraph post on its way?

  1. 2 sec

  2. 7 sec

  3. 4 sec

  4. 6 sec

  5. 8 sec
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Convert speed to m/s: 36 kmph * (5/18) = 10 m/s. Time = distance / speed = 60 m / 10 m/s = 6 seconds.

AI explanation

To pass a telegraph post, the train must cover a distance equal to its own length. First, convert the speed from kmph to m/sec using the conversion factor of 5/18, making the speed 36 * 5/18 = 10 m/sec. The time taken is the length of the train divided by its speed, which is 60 m / 10 m/sec. The result is 6 sec.

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